Nikon D300 D300 User's Manual - Page 402

❚❚ Manual Cleaning If foreign matter can not be removed from the low-pass filter using the [Clean image sensor] (pg. 373) option in the setup menu, the filter can be cleaned manually as described below. Note, however, that the filter is extremely delicate and easily damaged. Nikon recommends that the filter be cleaned only by Nikon-authorized service personnel. 1 Charge the battery or connect an AC adapter. A reliable power source is required when inspecting or cleaning the low-pass filter. If the battery level is below J (60 %), turn the camera off and insert a fully-charged EN-EL3e battery or connect an optional EH-5a or EH-5 AC adapter. 2 Select [Lock mirror up for cleaning]. Remove the lens and turn the camera on. Highlight [Lock mirror up for cleaning] in the setup menu and press 2 (note that this option is not available at battery levels of J or below). 3 Press J. The message shown at right will be displayed in the monitor and a row of dashes will appear in the control panel and viewfinder. To restore normal operation without inspecting the lowpass filter, turn the camera off. n 376